There is no official "PC version" of this or any mainline Mario game, as Nintendo titles are exclusive to their own consoles. If you are looking for this specific fan game, you will likely find it on fan-game communities: : Projects like this are often hosted on sites like or discussed on forums like Alternative (Official)
If you are looking for a fan-made sequel to Super Mario World often labeled as "Deluxe" or "New" on download sites, you are likely looking for ROM Hacks. super mario 2d world deluxe download pc better
The search for " Super Mario 2D World Deluxe " on PC reveals that this title is not an official Nintendo release, but rather a fan-made project There is no official "PC version" of this